Composition for fireproofing materials.



UNITED STATES PATENT oFrIc-n v WILLIAM G. ZELLER, OF PERTH .AflllH IlOY, NEW JERSEY, ASSIGNOR TU ERNEST G.

. DRAPER, 0F BROOKLYN, NEW YORK.

cdilti bsrrron' FOR rmnritoor'mc MA'rE'mAts'.

No Drawing.

To all whom it may concern:

Be it known that I, IVILLIAM C. ZELLER, a citizen of the United States, and a resident of the city of Perth Amboy, county of Middlesex, and State of New Jersey, have invented a new and useful Composition for Fireproofing Materials, of which the following is a specification.

In these days, fireproof building construction is extensively employed and in some places is required by the municipalregulaarticle, whatever it may be, due to the fireproofing material employed, also in some instances an objectionable odor, in other instances an objectionable hardness and stiffness and in almost all instances a marked increase in cost.

After extensive experimentation 'I have discovered a new solution or composition of matter better adapted to the purpose above stated than any of which I am aware. Its ingredients and preferred proportions are as follows: To one gallon of water which may be used hot or cold,- but preferably hot,

add ammoniumsulfate 19 ounces, am-

monium phosphate 4 ounces, sodium phosphate 1 ounce, borax 1 ounce. These chemicals as offered on the market are usually in crystal or' powdered form but since they are all soluble in waterit is easy to make a solution thereof.

The purpose or function in the mixture of the stated chemicals is as follows: Ammonium sulfate and ammonium phosphate are both good fireproofing materials. The phosphate is the better of the two because it generates in the presence of heat more amnoniacal gases than the sulfate and hence is more preventive of ignition and reduces inflammability. Its cost, however, being Specification of lietter's Patent.

Application filed April 22, 1914. Serial No. 833,615.

' PatentedNov. 3, 1914.

several times that of the sulfate, I prefer to use them conjointly in about the proportions stated, because in this way the cost of my new product is reduced and as an added advantage a bulk of fire resisting material sufficient to thoroughly impregnate the material being treated is secured, and likewise owing to the increased amount, they serve also in drying out as a filler for the material, adding to its solidity and strength.

Sodium phosphate is used principally for its decolorizing effect. It seems to have some chemical co-activcoperation with the ammonium phosphatein this respect so that the products treated by my composition, whatever they may be, are after drying out not materially changed in shade or color from that they had prior to the treatment.

They are thus better adapted to much interior work-where light colored or delicate decoration is to be subsequently applied, as by dyeing, painting, staining and the like.

Borax is used to prevent discolorization due to the presence in the article or structure treated of metal, such asscrews, nails, wire, piping and the like. The borax also acts as a neutralizer of the solution.

My new composition or solution is, as

stated above, adapted to use in the treatmentof wood, natural or artificial, textile fabrics, fibrous material and the like and may also be used to impregnate insulating materials or articles and it is adapted to the dipping, boiling or other known process and may be used hot or cold, moderate heat at least being preferred. I

The proportions given herein are not arbitrary, on the-contrary may be departed from within limits and still the essential benefits of the invention be realized, the formula given above being suggested merely as a good example.

It will of course be understood that if my composition is presented upon the market as an article of commerce, it is immaterial whether the ingredients be dissolved and offered in liquid or paste form, or whether the chemicals named be in crystal, powdered or other dry form to be dissolved at the time of use.

I claim:

1. A fireproofing composition comprising ammonium sulfate, ammonium phosphate,

sodium phos hate and b'orax, as and for the name to this s purpoAsefiset org; 1

2. reproo g so ution comprising ammonium sulfate, ammonium phosphate, WILLIAM GPZELLEBT 5 codium phosphate and borax dissolved in Witnesses :1

Water, as and for the purpose set forth. Gno. Ni MENnLEs, In testimony whereof I have signed my OLIVER A. ADoLF.

two subscribing Witnesses.

pecification in the presence of: 

